Abstract: The Charging of satellite surface is discovered early in the seventies. This is a new trouble harming geosynchronous orbit satellite. In order to provide a new method for solving the problem of charging of satellite surface, many people have mode a wide-ranging research.We started the research of charging technique of satellite surface in 1982,In this paper, the issues considered in design of the facitity simulating magnetosphere substorm environment are introduced. Requirements for simulating system and the composition and uses of simulating system are clarified. The design of vaccum system, elecfron gun, light source and surveying instruments are briefly described.